Determination of the Parameters of the Two-Parametric Fracture Mechanics along the Crack Front Based on the Digital Image Correlation Data
- Authors: Chernyatin A.S.1,2, Matvienko Y.G.2, Lopez-Crespo P.3
- 
							Affiliations: 
							- Bauman Moscow State Technical University
- Blagonravov Mechanical Engineering Research Institute
- University of Malaga
 
- Issue: Vol 53, No 15 (2017)
- Pages: 1562-1569
- Section: Mechanics of Materials: Strength, Lifetime, Safety
- URL: https://journals.rcsi.science/0020-1685/article/view/158379
- DOI: https://doi.org/10.1134/S0020168517150043
- ID: 158379
Cite item
Abstract
A mathematical processing technique and an algorithm for the numerical correction of experimental displacement fields on the specimen surface in the vicinity of a crack tip with consideration of the displacement of a body as a rigid whole under its loading and the actual position of a crack tip were proposed. The initial experimental displacement fields in the vicinity of a fatigue crack tip of a compact specimen were determined by digital image correlation. This approach was successfully used for a compact specimen and the possibility of its expansion to obtain the distributions of the stress intensity factors and the nonsingular T stresses along the spatial crack front was shown.
About the authors
A. S. Chernyatin
Bauman Moscow State Technical University; Blagonravov Mechanical Engineering Research Institute
							Author for correspondence.
							Email: cas@inbox.ru
				                					                																			                												                	Russian Federation, 							Moscow; Moscow						
Yu. G. Matvienko
Blagonravov Mechanical Engineering Research Institute
														Email: cas@inbox.ru
				                					                																			                												                	Russian Federation, 							Moscow						
P. Lopez-Crespo
University of Malaga
														Email: cas@inbox.ru
				                					                																			                												                	Spain, 							Malaga						
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